Re: [ferret_users] vertical formula embedded in netcdf file

[Albert Hermann - NOAA Affiliate <albert.j.hermann@xxxxxxxx>]

Thanks much Ryo,

I'm familiar with ZAXREPLACE; I guess my question is whether ferret is already doing this replacement internally (since that was the intention of this particular CF standard, to allow software to "automatically" regrid, or at least to calculate the z-array for the user). Any thoughts on this from the ferret developers? As it stands, it is difficult to know whether ferret is presenting me with raw or regridded values. If the former, I could attempt the regridding with ZAXREPLACE, as Ryo suggests.

Best,

Al Hermann

On Thu, May 7, 2020 at 9:09 PM Ryo Furue <furue@xxxxxxxxxx> wrote:

Hi Albert,

I'm not super familiar with the issue, I've seen this discussed on this mailing list, and somebody else must have a better answer, but anyway . . . 

On Fri, May 8, 2020 at 8:58 AM Albert Hermann - NOAA Affiliate <albert.j.hermann@xxxxxxxx> wrote:

Hi group,

I am reading in a file created from one of the CMIP6 models. It appears to have a coordinate transformation embedded as metadata, which one might think would yield different z-levels for the 4D variable (vo) at each horizontal location. However, when I read the file into ferret v7.5, I get vo appearing on a single z-axis (which ferret labels as  "lev"), ranging from 1 to 7250. That axis has the same

--

albert.j.hermann@xxxxxxxx
Pacific Marine Environmental Laboratory
7600 Sand Point Way NE
Seattle WA 98115
206-526-6495